Die Isothermkurven der Nordlichen Halbkugel

Map of the Northern Hemisphere showing lines of equal temperature (isotherms). In bottom corners are cross section diagram comparisons of mountain height with the New World and Old. These include Bolivia, Quito Mexico within South America as well as the Alleghanies in North America (but with no indication of the Rockies, Alaska, California mountains, etc.). Lower right names Himalayas, Caucasus, the Alps, Scandinavia, etc. Also included are insets of heights of mountain ranges, organized by latitude. Includes explanation.

The nineteenth century witnessed the rise of the systematic investigation of all aspects of Nature. Of particular interest was the determination of how specific phenomena — such as terrestrial magnetism or specific species of plants and animals — varied across the earth’s surface. The drive to measure everything included temperature, of critical importance for the frigid polar regions. Enough measurements had been taken around the northern hemisphere by 1850 to permit the German geographer Joseph Meyer to construct this remarkable map of isotherms (lines of equal temperature), defined in degrees Celsius. He also depicted, across the northern Atlantic Ocean, the southward limit of pack ice.

Taken form Neueste Zeitungs-Atlas für Alte & Neue Erdkunde With a engraved title page, index, and 123 steel engraving outline hand colored maps dated between 1849-1852. These atlas maps were produced in Hildburghausen, Amsterdam, and New York, and are considered some of the most detailed maps produced in the 19th Century.  Atlas includes 123 maps of old geography, maps of modern geography, and maps of physical geography. The maps are of the highest Meyer quality, with detail information, showing political and administrative boundaries, cities, towns, canals, forts, roads, railroads, rivers and mountains.

Steel-engraving, contemporary hand-coloring, light foxing, otherwise in very good condition.